Company lists · Data refreshed September 2026
Top 24 Infrastructure design companies based in Baton Rouge, United States
RevenueBase identified 32 infrastructure design companies headquartered in Baton Rouge, United States as of September 2026 and tracks 6,141 professional contacts across them, including 1,713 with verified work emails. Houston is the largest hub.
This list covers infrastructure design companies headquartered in Baton Rouge, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 24 largest infrastructure design companies based in Baton Rouge, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,639 contacts → | ||||
Indirect evidence “APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,232 contacts → | ||||
Indirect evidence “Providence is an employee-owned engineering and environmental consulting firm.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 305 contacts → | ||||
Indirect evidence “CSRS was acquired by Westwood Professional Services on June 30, 2025.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 299 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 134 contacts → | ||||
Indirect evidence “Established in 1986, GEC is a Louisiana-based engineering firm providing complete and proficient services from planning to implementation for private and public clients.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 122 contacts → | ||||
Partial evidence “Wink Engineering, LLC is a professional consulting firm which provides engineering and design to a diversified clientele, specializing in services to the industrial sector.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 93 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 61 contacts → | ||||
Indirect evidence “Founded in 1953, SJB Group has evolved into one of the most respected and diversified firms in its class separating itself from competitors through its personnel, breadth of…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 51 contacts → | ||||
Indirect evidence “JB James Construction, LLC is a full-service heavy highway and bridge contractor based in Baton Rouge, Louisiana.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 30 contacts → | ||||
Indirect evidence “GOTECH, Inc, a professional engineering and consulting firm, was established in 1981 by Rhaoul A.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 25 contacts → | ||||
Partial evidence “Bonton Associates engineers long-term solutions to public infrastructure challenges.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 23 contacts → | ||||
Indirect evidence “PEC is a multi-disciplined consulting firm with engineers and other specialists experienced in the following areas, civil, sanitary, transportation, mechanical, recreational…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 22 contacts → | ||||
Indirect evidence “Sigma Consulting Group, Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 13 contacts → | ||||
Partial evidence “At Timbalier Resources, we are your strategic partner in large-scale infrastructure projects.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 12 contacts → | ||||
Indirect evidence “With a combined 70 plus years of experience, Southeast Engineers has become a market leader in a wide range of engineering services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 11 contacts → | ||||
Indirect evidence “Owen and White, Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 10 contacts → | ||||
Indirect evidence “VECTURA Consulting Services, LLC was founded by two veteran Louisiana transportation engineers who have unique expertise in providing transportation engineering services from the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 8 contacts → | ||||
Partial evidence “Plus one design & construction was started with the core belief that design & construction should work together to offer clients a holistic approach.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 7 contacts → | ||||
Partial evidence “Civil Solutions Consulting Group is a civil engineering and surveying firm that assists governmental agencies, developers, and architecture firms with the planning, design, and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Indirect evidence “Founded in 1986, Compliance Consultants, Inc,(CCI) is a civil/environmental engineering and consulting firm that provides specialized services to a broad range of clients.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1 contacts → | ||||
Indirect evidence “Svaapta Group was founded with the objective of providing transportation-oriented consulting engineering services to both the public and private sectors.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Indirect evidence “ICS specializes in project management consulting.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Partial evidence “Resource Consulting is a full service civil engineering firm that combines Surveys, Environmental, Site Investigation Planning, Site Design, Approvals and Construction…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: infrastructure design companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names infrastructure design companies.
- Partial evidence
- Its own public description names part of infrastructure design companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name infrastructure design companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 24 of 32 infrastructure design companies based in Baton Rouge, United States
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Infrastructure design companies based in Baton Rouge, United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Baton Rouge, so it is reported there. Company counts and contact totals on this page are exact for Baton Rouge, over 32 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among infrastructure design companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Baton Rouge, United States whose own description of what they do matches “infrastructure design companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names infrastructure design companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among infrastructure design companies, and records with no verified work email. Companies headquartered outside Baton Rouge are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,713 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Infrastructure design companies by metro in the United States
- Infrastructure design companies in Houston186
- Infrastructure design companies in New York131
- Infrastructure design companies in Chicago104
- Infrastructure design companies in Miami84
- Infrastructure design companies in Austin82
- Infrastructure design companies in Dallas82
- Infrastructure design companies in Los Angeles67
- Infrastructure design companies in Orlando65
- Infrastructure design companies in Tampa62
- Infrastructure design companies in Atlanta61
- Infrastructure design companies in San Diego60
- Infrastructure design companies in Phoenix59
- Infrastructure design companies in San Francisco59
- Infrastructure design companies in Washington55
- Infrastructure design companies in Seattle50
- Infrastructure design companies in Denver49
- Infrastructure design companies in Portland47
- Infrastructure design companies in Jacksonville45
- Infrastructure design companies in Raleigh45
- Infrastructure design companies in San Antonio45
- Infrastructure design companies in Irvine44
- Infrastructure design companies in Charlotte40
- Infrastructure design companies in Columbia39
- Infrastructure design companies in Indianapolis38
- Infrastructure design companies in Las Vegas37
- Infrastructure design companies in Columbus33
- Infrastructure design companies in Sacramento33
- Infrastructure design companies in Baton Rouge32
- Infrastructure design companies in Fort Lauderdale32
- Infrastructure design companies in Pittsburgh32
- Infrastructure design companies in Fort Worth28
- Infrastructure design companies in Honolulu28
- Infrastructure design companies in New Orleans27
- Infrastructure design companies in Boston26
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names infrastructure design companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many infrastructure design companies are there based in Baton Rouge, United States?
RevenueBase identified 32 infrastructure design companies headquartered in Baton Rouge, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
APTIM, headquartered in Baton Rouge, tops this list with the largest team on record.
Which city has the most infrastructure design companies?
Houston leads with 186 headquartered companies, followed by New York (131) and Chicago (104).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,713 verified decision-maker contacts tracked across these 32 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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